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ABOUT OPENSTAX: OpenStax is a nonprofit educational initiative based at Rice University, whose mission is to give every student the tools they need to be successful in the classroom. OpenStax publishes high-quality, peer-reviewed, openly licensed college textbooks that are absolutely free online and low cost in print. Through partnerships with philanthropic foundations and alliances with other educational resource companies, OpenStax strives to break down the most common barriers to learning as they believe that a well-educated society profits us all.